<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;

class NotificationCheckSupportLogWeldlog extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'notifications:check-support-log-weldlog';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Check if Support Log weld count matches Weldlog count by line number (Process Piping Support only)';

    /**
     * Execute the console command.
     *
     * @return int
     */
    public function handle()
    {
        $startTime = microtime(true);
        $commandName = $this->signature;
        
        // Log command start
        logNotificationStart($commandName);
        
        $this->info('Checking Support Log vs Weldlog count discrepancies by line...');
        
        $notificationCode = 'notification_support_log_missing_in_weldlog';
        
        try {
            // Skip if checked recently (within 5 minutes)
            if (!shouldCheckNotification($notificationCode)) {
                $this->info('Skipping: Last notification sent less than 5 minutes ago.');
                logNotificationSkip($commandName, 'Last notification sent less than 5 minutes ago');
                return 0;
            }
        
        // Get last check time (null = first run, check all records)
        $lastCheck = getLastCheckTimestamp($notificationCode);
        
        // Get line_number based weld count from supports (erection_type = 'weld')
        $supportWeldCountsQuery = DB::table('supports')
            ->select('line_number', DB::raw('COUNT(*) as support_count'))
            ->where('erection_type', 'weld')
            ->whereNotNull('line_number')
            ->where('line_number', '!=', '')
            ->groupBy('line_number');
        
        // If not first run, only check lines with new/updated supports or welds
        if ($lastCheck !== null) {
            $supportWeldCountsQuery->where(function($q) use ($lastCheck) {
                $q->where('created_at', '>', $lastCheck)
                  ->orWhere('updated_at', '>', $lastCheck);
            });
        }
        
        $supportWeldCounts = $supportWeldCountsQuery->get()->keyBy('line_number');
        
        if ($supportWeldCounts->isEmpty()) {
            $this->info('No new welded supports found in Support Log.');
            $duration = microtime(true) - $startTime;
            logNotificationComplete($commandName, 0, 0, 0, $duration);
            return 0;
        }
        
        $this->info("Found {$supportWeldCounts->count()} unique lines with welded supports");
        
        // Get already notified line numbers
        $alreadyNotifiedLines = [];
        if ($lastCheck !== null) {
            $lastNotification = \App\Models\Notification::where('notification_code', $notificationCode)
                ->whereNotNull('filter_params')
                ->orderBy('created_at', 'DESC')
                ->first();
            
            if ($lastNotification && $lastNotification->filter_params) {
                $lastParams = is_array($lastNotification->filter_params) 
                    ? $lastNotification->filter_params 
                    : json_decode($lastNotification->filter_params, true);
                if (isset($lastParams['conditions']['line_number'])) {
                    $alreadyNotifiedLines = is_array($lastParams['conditions']['line_number']) 
                        ? $lastParams['conditions']['line_number'] 
                        : [$lastParams['conditions']['line_number']];
                }
            }
        }
        
        $discrepantLines = [];
        
        foreach ($supportWeldCounts as $lineNum => $supportData) {
            // Skip if already notified (unless first run)
            if ($lastCheck !== null && in_array($lineNum, $alreadyNotifiedLines)) {
                continue;
            }
            
            // Count matching records in weld_logs (piping_type = 'Process Piping Support')
            $weldlogCount = DB::table('weld_logs')
                ->where('line_number', $lineNum)
                ->where('piping_type', 'Process Piping Support')
                ->count();
            
            // If counts don't match, add to discrepancy list
            if ($supportData->support_count != $weldlogCount) {
                $discrepantLines[] = [
                    'line' => $lineNum,
                    'support_count' => $supportData->support_count,
                    'weldlog_count' => $weldlogCount
                ];
            }
        }
        
        if (empty($discrepantLines)) {
            $this->info('No new mismatched counts found.');
            $duration = microtime(true) - $startTime;
            logNotificationComplete($commandName, 0, 0, 0, $duration);
            return 0;
        }
        
        $lineNumbers = array_column($discrepantLines, 'line');
        
        // Merge with existing lines if not first run
        if ($lastCheck !== null && !empty($alreadyNotifiedLines)) {
            $lineNumbers = array_values(array_unique(array_merge($alreadyNotifiedLines, $lineNumbers)));
        } else {
            $lineNumbers = array_values(array_unique($lineNumbers));
        }
        
        $filterParams = [
            'table' => 'supports',
            'conditions' => [
                'line_number' => $lineNumbers
            ]
        ];
        
        // Check for duplicate
        if ($lastCheck !== null && isNotificationDuplicate($notificationCode, $filterParams)) {
            $this->info('Skipping: Same issue already notified and no new records.');
            $duration = microtime(true) - $startTime;
            logNotificationSkip($commandName, 'Same issue already notified and no new records');
            return 0;
        }
        
        $newCount = $lastCheck !== null ? count(array_diff($lineNumbers, $alreadyNotifiedLines)) : count($lineNumbers);
        $message = sprintf(
            '%d line(s) have mismatched support weld counts between Support Log (erection_type=weld) and Weldlog (piping_type=Process Piping Support). Please review and reconcile.',
            count($lineNumbers)
        );
        
        $sentCount = sendNotification(
            $notificationCode,
            $message,
            null,
            'Support Log - Weldlog Count Mismatch',
            $filterParams,
            count($lineNumbers)
        );
        
        $duration = microtime(true) - $startTime;
        $totalRecords = count($lineNumbers);
        
        // Log completion
        logNotificationComplete($commandName, $sentCount, $totalRecords, $newCount, $duration);
        
        $this->info("Sent {$sentCount} batch notification(s) for {$totalRecords} line(s) with mismatched counts ({$newCount} new).");
        return 0;
        
        } catch (\Exception $e) {
            $duration = microtime(true) - $startTime;
            logNotificationError($commandName, $e->getMessage(), [
                'file' => $e->getFile(),
                'line' => $e->getLine(),
                'duration' => $duration,
            ]);
            
            $this->error("Error: " . $e->getMessage());
            return 1;
        }
    }
}